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"Beyond anyons", Zhenghan Wang, 2017

Reviewed March 23, 2024

Citation: Wang, Zhenghan. "Beyond anyons." Modern Physics Letters A 33.28 (2018): 1830011.

Web: https://arxiv.org/abs/1710.00464

Tags: Physical, Expository


This isn't really a paper - it's an essay. It's a really cute essay about the possibilities for topological quantum computation beyond anyons. In particular, Zhenghan talks about three different ideas: computing with symmetry defects, computing with boundary defects, and computing with small black holes. The symmetry defect and boundary defect stories I am very well familiar with. The black hole idea is more speculative, and is based on the Banados-Teitelboim-Zanelli model of quantum gravity. If (2+1)D quantum gravity is a TQFT, what are the corresponding anyons? Black holes. Might as well make a computer out of them.